======================== unified (from filesystem) ========================
                                         'bitrate'  '193.921'
                                        'duration'  '319'
                                          'artist'  'Luminous Orange'
                                     'text_people'  ''
                                         'release'  'Drop You Vivid Colours'
                                           'title'  'The Sky'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie rock', 'indie', 'shoegaze', 'japanese', 'dream pop', 'j rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'loc-asia-japan;loc-asia-japan-jrock;set-pl-sced'
                                             'bpm'  '133.403'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         '                            '
'COMM:iTunNORM:eng'                                 (' 00001CDD 0000208C 0000580F 0000522C 0004AFC4 0003A6AF 00008000 00008000 '
 '0002909D 0001F95B')
"PRIV:AverageLevel:ý'\x00\x00"                      PRIV(owner='AverageLevel', data=b"\xfd'\x00\x00")
'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'Drop You Vivid Colours'
'TBPM' (BPM (beats per minute))                     '133.403'
'TCON' (Content type, a.k.a. Genre)                 ['loc-asia-japan', 'loc-asia-japan-jrock', 'set-pl-sced']
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'The Sky'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Luminous Orange'
'TPE2' (Band/orchestra/accompaniment)               'Luminous Orange'
'TPUB' (Publisher)                                  'tonevendor'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['indie rock', 'indie', 'shoegaze', 'japanese', 'dream pop', 'j rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.89 dB'
'TXXX:replaygain_track_peak'                        '0.378570'

========================== row from database ==========================
                                              'id'  1379808
                                            'path'  /data/Music/Bulk/00localcharacter/Luminous Orange/[2002] Drop You Vivid Colours/03 The Sky.mp3
                                         'working'  None
                                         'bitrate'  194
                                    'duration_sec'  319
                                           'genre'  loc-asia-japan;loc-asia-japan-jrock;set-pl-sced
                                        'filesize'  7794557
                                           'mtime'  1640870014
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter [2002] 03 loc asia japan;loc asia japan jrock;set pl sced
                                      'tag_artist'  Luminous Orange
                                     'tag_release'  Drop You Vivid Colours
                                       'tag_title'  The Sky
                                             'bpm'  133.403
                                    'search_title'  'sky':2 'the':1
                                   'search_artist'  'luminous':1 'orange':2
                                  'search_release'  'colours':4 'drop':1 'vivid':3 'you':2
                                     'search_rest'  '2002':1,2 'asia':4 'japan':5,7,9 'jrock':10,12 'loc':3,6,8 'pl':14 'sced':15 'set':11,13
                                    'search_combo'  '2002':9,10 'asia':12 'colours':8C 'drop':5C 'japan':13,15,17 'jrock':18,20 'loc':11,14,16 'luminous':3B 'orange':4B 'pl':22 'sced':23 'set':19,21 'sky':2A 'the':1A 'vivid':7C 'you':6C
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  7B
                                           'quals'  ['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', 'Q-LOCALNESS-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-1']
                                      'lastfmtags'  ['indie rock', 'indie', 'shoegaze', 'japanese', 'dream pop', 'j rock']
                                        'tag_date'  2002
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1640870013.7703347  (2021-12-30 14:13:33)
                             'size'  7794557